A zoom adjustment ring found on many digital video recorders and digital cameras. Zoom rings enable motorized zoom that allows you to change the focal length in real-time as you shoot. A 4X zoom lens, for example, will enlarge or reduce the subject in an image by four times depending on which way it's zoomed. Zoom lenses are either optical zoom or digital zoom.
Complete guide to digital cameras and digital photography An on-line book on digital photography covering both the basics and applications such as photos on the Web, panoramic and object photography, and stereo photography. An extensive "Toolbox" with links to many free digital photography programs.
Webopedia's Quick Reference: The Digital Camera Picture If you can't keep up with advances in digital camera, you're not alone. We help you make sense of megapixels, zero in on the zooms (digital, optical and total) and delve into everything from price points to paper to printers.
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